Not feeling embarrassed to follow the Sunnah

Q: We should follow the Sunnah unless it causes people to look down upon the Sunnah. Example: Eating out and insisting on sitting on the floor as Sunnah, or eating with your hands at a function where everyone is using a fork and knife. Is there any proof from the books of Deen (e.g. Qur’an, Hadith, Fiqh, etc.) or should we not feel embarrassed and follow the Mubaarak Sunnah wherever we are?

A: Why should you feel embarrassed to follow the Sunnah when the kuffaar and their likes do not feel embarrassed to go against the Sunnah?